The host hotel, the DoubleTree Hotel in Greentree, PA has 460 rooms. They are not blocking any for us. Instead they are releasing rooms as needed with no limit. If we take up the whole hotel so be it. As of today there are 167 rooms reserved. With that said, sometimes they are slow to release more rooms for our convention. This is at the corporate level, not the people in Greentree. We have run into this unfortunately before, but gets cleared up rather quickly. Usually a day or two. Hilton corporate says they will not take reservations if you call the front desk, the computer will show that there is no convention at all. That is why if you don't reserve online at www.corvairpittsburgh.com, or call there reservation line, 1-800-222-TREE (8733) and use code CCA, there may be a issue. If any other requests or problems exists please e-mail, call, or fill out the contact information on the website and I will surely get back to you.